R - T 1
E I A 2
S I X 2
T - D 2
This is for gyros and their axes
You REST because you are TAXD
R = RATE gyro
E = EARTH gyro
S = SPACE gyro
T = TIED gyro
The middle - or I are the axes, ie - = horizontal axis and I = vertical axis
T = Turn idicator
A = Artificial Horizon
x= ? meaningless but its not perfect
D = DI
The last column are the axes of precession (if I am remebering this correctly)
Hope this helps
TBL
